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Offering GCR-compatible diskette drives and floppy disk controllers (like the 100163-51-8 and 100163-52-6 [12]), Micropolis endorsed data encoding with group coded recording [13] on 5¼-inch 100 tpi 77-track diskette drives to store twelve 512-byte sectors per track since 1977 or 1978.
9-track tape drive used with DEC minicomputers Inside a 9-track tape drive. The vacuum columns are the two gray rectangles on the left. A typical 9-track unit consists of a tape transport—essentially all the mechanics that moves tape from reel to reel past the read/write and erase heads—and supporting control and data read/write electronics.
Critical Radius Ratio. This diagram is for octahedral interstices (coordination number six): 4 anions in the plane shown, 1 above the plane and 1 below. The stability limit is at r C /r A = 0.414. The radius ratio rule defines a critical radius ratio for different crystal structures, based on their coordination geometry. [1]
O4/5, Rebuilt with shortened O2-type boiler (Diagram 15A). Retained GCR style cab; O4/6, Introduced 1924. Rebuilt from O5 retaining higher cab. 63914-20 with side windows. All cabs eventually reduced in height. O4/7, Introduced 1939. Rebuilt with shortened O2-type boiler (Diagram 15D), retaining GCR smokebox. O4/8, Introduced 1944.
It has been preserved as part of the UK National Collection and currently wears restored GCR colours. No. 506 is the only surviving GCR passenger locomotive. The locomotive operated passenger trains on the preserved Great Central Railway in Leicestershire during the late 1970s, 1980s and early 1990s but is now out of running order.
The GCR Class 1 was a class of steam locomotives designed by John G. Robinson for the Great Central Railway, and introduced to service between December 1912 and 1913. In the 1923 grouping , they all passed to the London and North Eastern Railway which placed them in class B2 .
The GCR locos had 5000 added to their original numbers when the line was absorbed by the LNER in 1923, resulting in numbers ranging between 5021 and 5946. As part of the LNER's numbering rationalisation scheme introduced in 1946, the surviving 121 N5s were renumbered between 9250 and 9370 [ 3 ] with the earliest built receiving the lowest ...
GCR Class 8G was a class of 10 two-cylinder steam locomotives of the 4-6-0 wheel arrangement built in 1906 for the Great Central Railway. ... Toggle the table of ...